Help with my Nightforce scope

so I mounted my 3.5-15x50 to my rem. sendero using seekings rings and base. Today when i was sighting in with my new toy i had to go 3/4 of the way up with the elevation turret. obviously this isn't going to be good when it come time to dial in that looooong paper shot. right now my zero has the scope with only 28MOA 'UP' remaining.
any ideas?